Summary

The cartoon features Hercules, the legendaryhero, who dwells on Mount Olympus. When villains threaten the people of ancient Greece, he puts on a magic ring from which he gets his superpowers. When he puts it on, it is struck by flashes of lightning (referred to as the Thunder of Zeus in several episodes). Hercules is then endowed with super-strength, and goes forth brief episodes to do battle with nemesis such as Daedalus, an evilwizard who is the chief villain, as well as others such as Wilhemine the SeaWitch, and the Mask of Vulcan (whose real name, mentioned in only a few episodes, such as "Hercules and his Two Rivals", is Murtis). Hercules has friends and allies such as Helena, his girlfriend; Prince (later King) Dorian; the boy centaur Newton; and Tewt, a miniature boy satyr who "spoke" only by playing his panpipes.

In the original episode, Hercules beats his friend Theseus in a footrace and a wrestling match, and for his victory is granted any request by Zeus as a reward. Hercules wishes to go to Earth to fight evil and injustice, but Zeus reminds him that going to Earth would cause him to lose his godly powers and become a mortal. Zeus then creates a magic ring that allows Hercules to access his godly strength while on Earth. The rest of the cartoon involves Hercules meeting Helena and fighting a giant named Cacus and the giant's pet dragon. None of the other familiar characters make an appearance in this episode, and it features different character designs for Hercules (who in this one short has a yellow belt and wristbands, with a black H in block lettering on the belt; the ring is of similar design, large and yellow, with a black H in a giant sunburst) and Helena (who has a different hairstyle, a silver necklace, and more makeup than her later versions).

The show generally used real Greek myths for their inspiration, but used the influences oddly. (Daedalus, the evil wizard who is Hercules' most frequent foe, is named for Daedalus, mythological artificer who wasn't a villain at all, and Cacus, the giant in the first episode, is based on the mythological monster Cacus. Other recurring creatures like the Nemean Lion, the Lernaean Hydra, the Erymanthian Boar, and the Stymphalian Birds were taken directly from Hercules' Twelve Labors, but most weren't presented as trials for him to overcome. (For example, Hercules defeats the Lion in one punch before Murtis gives it a Mask of Vulcan to help it, and the Boar is already bound by a silver chain, with Hercules stopping first Murtis and later Dedaelus from freeing it).

In addition to the ring, later episodes added new equipment for Hercules and his friends to use: a "moon stone" beam in his belt (and a matching belt that Newton frequently wore) that could be used to summon him from Mount Olympus, an invulnerable sword and shield (both with the same "H" symbol as his ring and belt), and a set of pipes to summon Pegasus, his winged steed. (Hercules being paired with Pegasus was not in the original myths, but it was used again when Disney made their own animated version of Hercules).

The show also featured two different sets of voices for the characters (there was no gradual change - most of the early episodes had one set of voices, the rest have the second set). The most noticeably different voice was Newton: in the "older" voice style he sounds like he'd just hit puberty, with his voice constantly cracking, while the later episodes give him a high-pitched Mickey Mouse-like voice. The animation for the "putting on and charging up the ring" sequence also subtly changed with the voices. For an example of the former style and voices, watch the episodes "The Minotaur" or "The Chair Of Forgetfulness"; for an example of the latter, watch "The Nemean Lion" or "The Chameleon Creature".